Easy
15-30 minutes
This replacement air filter is supplied by the original equipment manufacturer for use with Husqvarna chainsaws. Its purpose is to remove dust and other harmful contaminants from the air that goes through the unit, over time it will get clogged eventually requiring a replacement to ensure the proper air flow. This high-quality filter is made of felt material and it is sold individually.
Air Filter - Felt 503818004
OEM part for: Husqvarna
Part Number: 503818004
$37.35
In Stock
Ships within 1 business day 
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Compatibility
This Air Filter - Felt will fit the following 68 machines. Confirm this part works with your model, and view the detailed model diagrams and repair help we have to offer.
Husqvarna
Show More Compatible ModelsThis item works with the following types of products:
- Chain Saw Parts
- Saw Parts
This part replaces obsolete part #: 5038180-01, 503818001
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Exact part
A little pricey but fit perfectly.
Donald -
May 14, 2024
Verified Purchase
Very happy with quick turn around
Very happy with quick turn around
Guest -
January 18, 2022
Verified Purchase
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Customer Repair Instructions ?
All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part.
I had to replace the initiation, c.saw was not firing. While I was replacing the ignition, I replaced the pull rope, air filter and spark plug.
David - December 29, 2016
👍 1 of 1 people found this instruction helpful
Tool Type
Chain Saw
Difficulty
Easy
Time
15-30 minutes
Tools Used
Screwdriver, Socket set, Allen Wrench Set, C-Type Vice Grips
Actually this was the second time into this repair. I had purchased an "aftermarket" ignition previously, big mistake. Another lesson learned, ALWAYS USE PROPER REPAIR PARTS. It will save a lot of time and make your repair jobs go much smoother. FYI - The saw is a Husqvarna 372, 24" Bar
I simply removed cover that holds the pull rope and gained access to the ignition area. Tightening down the new ignition while maintaining a gap between the ignition and the "flywheel", using a business card.
I used the vice grips to hold the tightened spring in place while replacing the pull rope, I find it makes it easier to replace the rope, you just have to be careful not to put too much pressure on the vice grips because the reel that holds the rope is plastic, although a very tough plastic, it's still plastic. Put it all back together.
Pulled the rope and was ready to start cutting. Runs like a new saw!
I have had this saw for at least 10 years, it was purchased with a group of saws at a pawn shop. I think I got at least 10 different saws for under $1,000,00. There were two of these saws in the "package". This one saw has been worth the amount paid for all, it is used quite a lot and with the PROPER repair parts will be used a lot more.
Thanks, I'll be back
I simply removed cover that holds the pull rope and gained access to the ignition area. Tightening down the new ignition while maintaining a gap between the ignition and the "flywheel", using a business card.
I used the vice grips to hold the tightened spring in place while replacing the pull rope, I find it makes it easier to replace the rope, you just have to be careful not to put too much pressure on the vice grips because the reel that holds the rope is plastic, although a very tough plastic, it's still plastic. Put it all back together.
Pulled the rope and was ready to start cutting. Runs like a new saw!
I have had this saw for at least 10 years, it was purchased with a group of saws at a pawn shop. I think I got at least 10 different saws for under $1,000,00. There were two of these saws in the "package". This one saw has been worth the amount paid for all, it is used quite a lot and with the PROPER repair parts will be used a lot more.
Thanks, I'll be back
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Air filter plugged. Clutch cover was broken.
Donald - May 13, 2024
Tool Type
Chain Saw
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Screwdriver, Socket set
Clutch cover replacement:
1. Backed-off the chain tensioner adjusting screw.
2. Remove the two nuts holding the clutch cover onto the engine.
3. Removed the clutch cover.
4. Put new cover in place and installed the clutch cover nuts being careful to align the chain tensioner pin.
5. When the cover nuts are snug, tighten the chain tensioner screw.
6. Tighten cover nuts.
7. Run saw for a minute then re-tension the chain.
Replace air filter:
1. Go into kitchen and have a cup of coffee.
2. With saw on work bench use a flat tip screwdriver to un-snap the plastic air filter cover retainers.
3. Remove air filter cover. Set aside.
4. Remove air filter by unscrewing the thumbscrew. If thumbscrew is too tight you may need a flat tip screwdriver or a pair of duck bill pliers to loosen it.
5. Using a cleaning brush clean all debris away from the air filter where it attaches to the engine.
6. Remove old air filter.
7. Remove thumbscrew from old filter and put it in the new filter.
8. Place filter on engine and tighten thumbscrew.
9. Replace the air filter cover and secure it by snapping the plastic retainers into position.
1. Backed-off the chain tensioner adjusting screw.
2. Remove the two nuts holding the clutch cover onto the engine.
3. Removed the clutch cover.
4. Put new cover in place and installed the clutch cover nuts being careful to align the chain tensioner pin.
5. When the cover nuts are snug, tighten the chain tensioner screw.
6. Tighten cover nuts.
7. Run saw for a minute then re-tension the chain.
Replace air filter:
1. Go into kitchen and have a cup of coffee.
2. With saw on work bench use a flat tip screwdriver to un-snap the plastic air filter cover retainers.
3. Remove air filter cover. Set aside.
4. Remove air filter by unscrewing the thumbscrew. If thumbscrew is too tight you may need a flat tip screwdriver or a pair of duck bill pliers to loosen it.
5. Using a cleaning brush clean all debris away from the air filter where it attaches to the engine.
6. Remove old air filter.
7. Remove thumbscrew from old filter and put it in the new filter.
8. Place filter on engine and tighten thumbscrew.
9. Replace the air filter cover and secure it by snapping the plastic retainers into position.
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All our part reviews are solicited directly from other customers who have purchased this exact part. While we moderate these reviews for profanity, offensive language or personally identifiable information, these reviews are posted exactly as submitted and no alterations are made by our team.
All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part. While we moderate these reviews for profanity, offensive language or personally identifiable information, these reviews are posted exactly as submitted and no alterations are made by our team.
Based on data from past customer purchasing behaviors, these parts are most commonly purchased together along with the part you are viewing. These parts may be necessary or helpful to replace to complete your current repair.
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